diff options
Diffstat (limited to 'guides/source')
| -rw-r--r-- | guides/source/action_view_overview.md | 77 | ||||
| -rw-r--r-- | guides/source/contributing_to_ruby_on_rails.md | 10 | ||||
| -rw-r--r-- | guides/source/layouts_and_rendering.md | 30 |
3 files changed, 37 insertions, 80 deletions
diff --git a/guides/source/action_view_overview.md b/guides/source/action_view_overview.md index e16fe4dbeb..8f6676dc65 100644 --- a/guides/source/action_view_overview.md +++ b/guides/source/action_view_overview.md @@ -365,83 +365,6 @@ WIP: Not all the helpers are listed here. For a full list see the [API documenta The following is only a brief overview summary of the helpers available in Action View. It's recommended that you review the [API Documentation](http://api.rubyonrails.org/classes/ActionView/Helpers.html), which covers all of the helpers in more detail, but this should serve as a good starting point. -### RecordTagHelper - -This module provides methods for generating container tags, such as `div`, for your record. This is the recommended way of creating a container for render your Active Record object, as it adds an appropriate class and id attributes to that container. You can then refer to those containers easily by following the convention, instead of having to think about which class or id attribute you should use. - -#### content_tag_for - -Renders a container tag that relates to your Active Record Object. - -For example, given `@article` is the object of `Article` class, you can do: - -```html+erb -<%= content_tag_for(:tr, @article) do %> - <td><%= @article.title %></td> -<% end %> -``` - -This will generate this HTML output: - -```html -<tr id="article_1234" class="article"> - <td>Hello World!</td> -</tr> -``` - -You can also supply HTML attributes as an additional option hash. For example: - -```html+erb -<%= content_tag_for(:tr, @article, class: "frontpage") do %> - <td><%= @article.title %></td> -<% end %> -``` - -Will generate this HTML output: - -```html -<tr id="article_1234" class="article frontpage"> - <td>Hello World!</td> -</tr> -``` - -You can pass a collection of Active Record objects. This method will loop through your objects and create a container for each of them. For example, given `@articles` is an array of two `Article` objects: - -```html+erb -<%= content_tag_for(:tr, @articles) do |article| %> - <td><%= article.title %></td> -<% end %> -``` - -Will generate this HTML output: - -```html -<tr id="article_1234" class="article"> - <td>Hello World!</td> -</tr> -<tr id="article_1235" class="article"> - <td>Ruby on Rails Rocks!</td> -</tr> -``` - -#### div_for - -This is actually a convenient method which calls `content_tag_for` internally with `:div` as the tag name. You can pass either an Active Record object or a collection of objects. For example: - -```html+erb -<%= div_for(@article, class: "frontpage") do %> - <td><%= @article.title %></td> -<% end %> -``` - -Will generate this HTML output: - -```html -<div id="article_1234" class="article frontpage"> - <td>Hello World!</td> -</div> -``` - ### AssetTagHelper This module provides methods for generating HTML that links views to assets such as images, JavaScript files, stylesheets, and feeds. diff --git a/guides/source/contributing_to_ruby_on_rails.md b/guides/source/contributing_to_ruby_on_rails.md index e06706d750..32d1e2c6e7 100644 --- a/guides/source/contributing_to_ruby_on_rails.md +++ b/guides/source/contributing_to_ruby_on_rails.md @@ -173,12 +173,12 @@ $ git checkout -b my_new_branch It doesn't matter much what name you use, because this branch will only exist on your local computer and your personal repository on GitHub. It won't be part of the Rails Git repository. -### Bundle Update +### Bundle install -Update and install the required gems. +Install the required gems. ```bash -$ bundle update +$ bundle install ``` ### Running an Application Against Your Local Branch @@ -376,6 +376,10 @@ A CHANGELOG entry should summarize what was changed and should end with author's Your name can be added directly after the last word if you don't provide any code examples or don't need multiple paragraphs. Otherwise, it's best to make as a new paragraph. +### Updating the Gemfile.lock + +Some changes requires the dependencies to be upgraded. In these cases make sure you run `bundle update` to get the right version of the dependency and commit the `Gemfile.lock` file within your changes. + ### Sanity Check You should not be the only person who looks at the code before you submit it. diff --git a/guides/source/layouts_and_rendering.md b/guides/source/layouts_and_rendering.md index b7fc580939..329d501ce0 100644 --- a/guides/source/layouts_and_rendering.md +++ b/guides/source/layouts_and_rendering.md @@ -1124,6 +1124,36 @@ You can also pass local variables into partials, making them even more powerful Although the same partial will be rendered into both views, Action View's submit helper will return "Create Zone" for the new action and "Update Zone" for the edit action. +To pass a local variable to a partial in only specific cases use the `local_assigns`. + +* `index.html.erb` + + ```erb + <%= render user.articles %> + ``` + +* `show.html.erb` + + ```erb + <%= render article, full: true %> + ``` + +* `_articles.html.erb` + + ```erb + <%= content_tag_for :article, article do |article| %> + <h2><%= article.title %></h2> + + <% if local_assigns[:full] %> + <%= simple_format article.body %> + <% else %> + <%= truncate article.body %> + <% end %> + <% end %> + ``` + +This way it is possible to use the partial without the need to declare all local variables. + Every partial also has a local variable with the same name as the partial (minus the underscore). You can pass an object in to this local variable via the `:object` option: ```erb |